neg or positive ground

Anonymous-0 · Dec 9, 2012

working on a 63 602 MM and don"t know if it is neg or pos ground how do you tell

DeltaRed · Dec 9, 2012

If it still has the battery cables,simply look at the terminal ends.If the bigger(positive) goes to ground,its pos ground.If the smaller goes to grd,its neg grd.Or hook up the battery,watch the gauge.that will tell if you have the polarity correct.

rustred · Dec 9, 2012

by 1963 12 volt was pretty much the going thing. 98 percent chance its neg. ground. if it was 6 volt it would be pos. ground. as the 1950's and prior tractors were. also the cable hook up will tell the story also.

rrlund · Dec 9, 2012

Don't know specifically about the Molines,but the Olivers were positive ground up til they went to alternators. 12 volt included.

rvirgil_KS · Dec 9, 2012

Diagram I have from a manual shows it was originally positive ground.

Good point about size of battery terminals.

If converted to alternator it should be converted to negative ground. Check wire from coil to distributor. If positive post on coil goes to distributor it indicates positive ground, if negative to distributor it indicates negative ground.

Also, with battery connected, turn on lights and/or ignition. Ammeter should swing negative when system is properly wired.

Dennis K (WA) · Dec 9, 2012

A lot of regulators, if external, will have what voltage and what ground
N or P stamped on the mounting flange of the regulator.
Dennis

neg or positive ground

Anonymous-0

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DeltaRed

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rustred

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rrlund

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rvirgil_KS

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Dennis K (WA)

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